Home / 2,865.84-4,298.68-1,221.56

Finding the Fourth Proportional to 2,865.84, 4,298.68 and 1,221.56

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Solution

The fourth proportional to 2,865.84, 4,298.68 and 1,221.56 is: 1,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.84 : 4,298.68 = 1,221.56 : x
  2. Step 2: Convert to fraction form
    2,865.84/4,298.68 = 1,221.56/x
  3. Step 3: Cross multiply
    2,865.84x = 4,298.68 × 1,221.56
  4. Step 4: Simplify right side
    2,865.84x = 5,251,095.54
  5. Step 5: Solve for x
    x = 5,251,095.54/2,865.84
  6. Step 6: Final answer
    x = 1,832.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.